Good Question: What Are Those Blue Traffic Lights? - CBS Minnesota

You may have noticed new blue lights popping up near traffic signals all over the metro. They are small, generally tucked out of the way so they don't distract drivers. Over the past two weeks, they've been going up all over Ramsey County.
You may have noticed new blue lights popping up near traffic signals all over the metro. They are small, generally tucked out of the way so they don't distract drivers. Over the past two weeks, they've been going up all over Ramsey County.

Omni Directional Law Enforcement Confirmation Lights (Blue Traffic Lights) – Sound Ominous to You? - National Motorists Association

Motorists viewing northern lights causing traffic problems in Chisago County - CBS Minnesota

Tattle Tale Lights: Have you noticed blue lights showing up in your area?

Police departments use blue lights to help catch red-light runners, Lake Minnetonka News

Police departments use blue lights to help catch red-light runners, Lake Minnetonka News

Metro Transit TRIP Agents to start riding light rail trains in bid to boost safety - CBS Minnesota

Six Things You Didn't Know About Traffic Signals - WSB

What to do when power is out at traffic lights?

Brigitte Gerney Was Crushed by a 35-Ton Crane, and Lived - The New York Times